Gumroad.

Not really. Perhaps of late, but Sahil was pretty clear that they chased growth (building features that weren't core to the product) to try to get that next round of VC, and that growth stagnated; the company didn't intentionally restrict growth.

https://medium.com/@shl/reflecting-on-my-failure-to-build-a-...

Basecamp.

DHH made a nice post about it a few years back (2015) https://medium.com/signal-v-noise/reconsider-41adf356857f

Build it anyway. You'll become many times the person you were before you started building it.